Switchable support element

Patent metadata

Field	Value
Publication number	US-9617879-B2
Application number	US-201414888981-A
Country	US
Kind code	B2
Filing date	Feb 26, 2014
Priority date	May 15, 2013
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

A switchable support element ( 1 ) for a valve train of an internal combustion engine is disclosed, including a housing ( 4 ), in the bore of which ( 5 ) an axially displaceable inner element ( 7 ) is located, wherein two coupling slides ( 9 ) run in a radial bore ( 8 ) of the inner element ( 7 ) and can be brought into engagement with a driver surface of the housing ( 4 ) in an axially extended position, wherein the extended position is limited by a height stop ( 10 ), which is formed of a circlip assembly, which runs peripherally on an annular shoulder ( 13 ) of the inner element ( 7 ) and which, in the event of contact, lies radially externally above the upper annular end ( 14 ) thereof in abutment against a lower annular edge ( 15 ) of an annular groove ( 16 ) of the housing ( 4 ) near the upper edge thereof ( 17 ), and wherein an outer casing ( 11 ) of the housing is enclosed by a rotationally fixed ring as an outer anti-twist mechanism ( 12 ) with an offset bore ( 18 ).

First claim

The invention claimed is:

1. A switchable support element for a valve train of an internal combustion engine, comprising a housing that is installable in a receptacle of a cylinder head of the internal combustion engine having a bore hole in which an axially moving inner element is located that receives a force applied by a spring element pushing said inner element outward from the housing, at least one coupling slide runs in a radial bore hole of the inner element, said at least one coupling slide is brought into engagement in an axially extended position of the inner element with a driving surface of the housing, and the axially extended position is limited by a height stop, a projection extends past an outer casing of the housing to form an outer anti-rotation lock, the height stop includes at least one circlip that surrounds an annular shoulder of the inner element and contacts a lower annular edge of an annular groove of the housing at an upper edge thereof radially outward past an upper annular end in the contact case, and the outer casing of the housing is surrounded by a rotationally fixed ring or ring segment as the outer anti-rotation lock with an offset bore hole for installation in a complementary counter contour of the receptacle of the cylinder head.

2. The support element according to claim 1 , wherein for forming the rotationally fixed attachment of the ring or ring segment, a tongue projects radially inward from the ring or ring segment through a cut section of the housing, and the tongue runs with lateral outer sides thereof in front of or on legs of the cut section.

3. The support element according to claim 2 , wherein the ring or ring segment is locally separated by the height stop and runs directly axially underneath the height stop, and the cut section is open for the tongue from the upper edge of the housing.

4. The support element according to claim 1 , wherein exactly two of the circlips are used.

5. The support element according to claim 4 , wherein only an upper one of the circlips of the two circlips is provided grouped with respect to a thickness thereof for installation for defining the axially extended position of the inner element out of the housing.

6. The support element according to claim 1 , wherein the circlip has, on an inner edge thereof, a flattened section that interacts with an opposing flat section on an outer casing of the inner element, and free ends of the circlip contact legs of a cut section of the housing bent radially outward, to form an inner anti-rotation lock.

Assignees

• Schaeffler Technologies Ag

Inventors

• Schnell Oliver
• Sailer Peter
• Geers Christian
• Elgas Ulrich
• Pfeufer Rainer
• Weidlich Stefan
• Baumgarten Dieter
• Liebel Armin

Classifications

• F01L13/0005

  Deactivating valves · CPC title

• F01L2307/00

  Preventing the rotation of tappets · CPC title

• F01L13/0015 Primary

  for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque · CPC title

• F01L1/14

  Tappets {(hydraulic tappets for automatically adjusting or compensating clearance F01L1/24)}; Push rods · CPC title

• F01L2107/00

  Mechanical Engineering · mapped topic